/*
 * Copyright 2011 David de Mingo
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.shalma.internal.client;

import com.google.gwt.user.client.Window;

public class Utils {

	private static Boolean mobile;

	public static boolean isMobile() {

		if (mobile == null)
			mobile = _isMobile();

		return mobile;
	}

	/*
	 * @see http://www.zytrax.com/tech/web/mobile_ids.html
	 */
	private static boolean _isMobile() {

		String[] MOBILE_SPECIFIC_SUBSTRING = { "iphone", "android" };

		String userAgent = Window.Navigator.getUserAgent().toLowerCase();
		for (String agent : MOBILE_SPECIFIC_SUBSTRING) {
			if (userAgent.contains(agent))
				return true;
		}

		return false;
	}
}
